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29 lines
845 B
Go
29 lines
845 B
Go
// Copyright (c) The OpenTofu Authors
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// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2023 HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package statefile
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// looksLikeVersion0 sniffs for the signature indicating a version 0 state
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// file.
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//
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// Version 0 was the number retroactively assigned to OpenTofu's initial
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// (unversioned) binary state file format, which was later superseded by the
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// version 1 format in JSON.
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//
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// Version 0 is no longer supported, so this is used only to detect it and
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// return a nice error to the user.
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func looksLikeVersion0(src []byte) bool {
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// Version 0 files begin with the magic prefix "tfstate".
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const magic = "tfstate"
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if len(src) < len(magic) {
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// Not even long enough to have the magic prefix
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return false
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}
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if string(src[0:len(magic)]) == magic {
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return true
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}
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return false
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}
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